4.0.0 org.springframework.boot spring-boot-starter-parent 2.4.0 com.baeldung.docker spring-boot-postgres-docker 0.0.1-SNAPSHOT spring-boot-postgres-docker Demo project showing Spring Boot, PostgreSQL, and Docker 11 org.springframework.boot spring-boot-starter-data-jpa org.postgresql postgresql runtime org.springframework.boot spring-boot-starter-test test org.springframework.boot spring-boot-maven-plugin